Bugatti has teased a mysterious hypercar that it never brought into production, describing it as “an automotive solitaire.”

The teaser image shows the rear of the car’s side profile under a sheet, meaning very little of it is actually on display. It appears the vehicle is based on the Chiron as evidenced by its shape but immediately making it stand out is some kind of fixed rear wing. No other details are visible in this photo.

Read: Bugatti’s Never-Before-Seen Secret Concept Hypercars Revealed

While it may seem a little odd for Bugatti to tease a model that never hit the market, it has done it before. In early 2020, the French car manufacturer unveiled a trio of concept cars that it designed but never produced.

 Bugatti To Unveil Mystery Model That Never Reached Production
Bugatti Veyron Barchetta Concept

The first of them was the Veyron Barchetta designed by the head of Bugatti’s design department, Achim Anscheidt in 2008. Despite its age, it has a very fresh and modern look and its headlights are almost identical to those found on the limited-run Bugatti Divo, introduced more than a decade later. Bugatti also showcased the Atlantic Coupe, designed as a modern-day version of the 1936 Type 57 Atlantic but never introduced because of the dieselgate scandal in 2015.

Last but not least was the Bugatti W16 Coupe Rembrandt, a front-engined GT with the same 8.0-liter quad-turbo W16 as the Chiron.

While little is known about this latest Bugatti creation, the car manufacturer will reveal all on December 21 at 10 AM CET alongside RM Sotheby’s, leading to some speculation that the vehicle may be available to purchase.

 Bugatti To Unveil Mystery Model That Never Reached Production